This page lists the cycling guide books that I recommend. These books are the best that I have come across and they will help you to find great routes that will take you all over Scotland.
Bike Scotland by Fergal MacErlean These are pocket sized and beautifully presented with easy to follow maps and route descriptions. They are full of recommendations of things to see and do along the routes. They opened my eyes to the infinite possibilities of exploring Scotland by bike. I cannot emphasise enough how brilliant these books are and you can read my blog about how much they inspired me.
Book One covers central Scotland. Book Two covers the Highlands and Islands. Book three covers north east Scotland. Buy them here, via Amazon, by clicking on the images:
Cycle Route 1 and Route 7 guides by Pocket Mountains These have a similar design to the Bike Scotland books with the easy to follow maps and information about things to see and do. They break down these long distance routes into manageable sections to make it easy to plan day and multi-day trips. Route 1 and Route 7 are marked cycle routes that are mainly traffic-free, so they are ideal routes for exploring large parts of Scotland without the worry about cycling on roads.